avcodec/jpeg2000: Check stepsize before using it
authorMichael Niedermayer <michael@niedermayer.cc>
Mon, 15 Apr 2019 22:41:54 +0000 (00:41 +0200)
committerMichael Niedermayer <michael@niedermayer.cc>
Thu, 27 Jun 2019 15:50:47 +0000 (17:50 +0200)
commit3f950b866a839041d587bd5b91d25a35d85408b2
tree920668e2822f40cfdd49b2050b87941b85691efa
parentd5ba641ff4dccaf2bd9b324397f23845d7521da5
avcodec/jpeg2000: Check stepsize before using it

Fixes: value 1.87633e+10 is outside the range of representable values of type 'int'
Fixes: Undefined behavior
Fixes: 14246/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_JPEG2000_fuzzer-5758393601490944

Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
(cherry picked from commit 06ef186fa1b7329c6fe6723372a72464c998059b)
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
libavcodec/jpeg2000.c